THERMOBILE AT 400 Serie Manuel De L'utilisateur page 27

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Fault
The flame is extin-
guished immediately
after ignition; the
control light is on.
The air combustion
fan keeps running,
while the hot air fan
has stopped and the
heater has cooled
down.
There is soot forma-
tion in the combus-
tion chamber and in
the flue.
There is soot forma-
tion in the combus-
tion chamber and in
the flue.
There is leakage
between the bottom
of the control panel
and the vaporiser.
The flame goes out
directly after ignition.
AT 400 - 500 series
Cause
9 There is no proper flue
draught.
10 The combustion thermo-
stat is defective.
11 The combustion air fan
is not functioning.
12 There is insufficient sup-
ply of combustion air
13 The flue draught is too
high or irregular.
14 There is leakage
between the bottom of
the control panel and
the vaporiser.
15 The flue draught is too
low.
40.020.942 - rev. 04 - 2011
Solution
Check whether the flue is fit-
ted according to the descrip-
tion, see "flue".
Check the flue for leakage.
Clean the flue if necessary.
See faults: 3 and 4.
Replace the combustion
thermostat.
Check the motor and replace
if necessary.
Clean the holes in the vapor-
iser.
Check the functioning of the
combustion air fan.
Position a flue stack valve,
see "flue".
Adjust the flue to the right
pressure, see § 5.3.
See faults: 9, 12, and 13.
Adjust the pressure on the
seal cord.
Replace the seal cord.
Check all connections in the
flue.
Check whether the draught
regulator is off.
Check the flue for blockage.
Reduce the number of
bends.
Heighten the flue.
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